title: Clinical and patient-reported outcomes of primary TKA with a single-radius design.
abstract: Total knee arthroplasty (TKA) is a cost-effective procedure used to treat degenerative knee disease with excellent long-term outcomes. However, TKA has not always resulted in excellent functional and patient satisfaction outcomes, partly due to the use of prostheses that did not reproduce natural knee kinematics. Due to a paucity of reports on single-radius designs, the authors evaluated the clinical and patient-reported outcomes of primary TKA in patients who had received a single-radius prosthesis. A total of 287 TKAs from 7 centers were prospectively evaluated. Mean follow-up was 5 years, with each patient undergoing year re-evaluation. Kaplan-Meier implant survivorship was 99.7% at a final follow-up of 7 years. The total reoperation rate was 1.4%. Clinical outcomes demonstrated significant improvements in Knee Society, Short Form 36, and activity scores at a mean follow-up of 5 years. The authors believe that various features of this prosthesis may have contributed to these excellent outcomes. Further longer-term studies are necessary to better evaluate these outcomes.
authors.affiliation: Adult Reconstruction and Total Joint Replacement Service, Beth Israel Medical Center, New York, New York, USA.
authors.forename: Steven F
authors.initials: SF
authors.lastname: Harwin
authors.forename: Kimona
authors.initials: K
authors.lastname: Issa
authors.forename: Kristin
authors.initials: K
authors.lastname: Given
authors.forename: Kirby D
authors.initials: KD
authors.lastname: Hitt
authors.forename: Kenneth A
authors.initials: KA
authors.lastname: Greene
authors.forename: Robert
authors.initials: R
authors.lastname: Pivec
authors.forename: Mark
authors.initials: M
authors.lastname: Kester
authors.forename: Michael A
authors.initials: MA
authors.lastname: Mont
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000706:statistics & numerical data*; D015897:Comorbidity; D019544:Equipment Failure Analysis; D005260:Female; D017102:Fracture Healing; D006801:Humans; D007720:Knee Prosthesis / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000175:diagnosis / Q000453:epidemiology* / Q000601:surgery*; D017060:Patient Satisfaction / Q000706:statistics & numerical data*; D011183:Postoperative Complications / Q000175:diagnosis / Q000453:epidemiology* / Q000517:prevention & control; D015995:Prevalence; D011474:Prosthesis Design; D020127:Recovery of Function; D012307:Risk Factors; D016896:Treatment Outcome; D014481:United States / Q000453:epidemiology